/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:30:57,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:30:57,168 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:30:57,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:30:57,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:30:57,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:30:57,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:30:57,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:30:57,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:30:57,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:30:57,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:30:57,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:30:57,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:30:57,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:30:57,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:30:57,263 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:30:57,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:30:57,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:30:57,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:30:57,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:30:57,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:30:57,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:30:57,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:30:57,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:30:57,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:30:57,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:30:57,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:30:57,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:30:57,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:30:57,312 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:30:57,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:30:57,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:30:57,314 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:30:57,315 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:30:57,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:30:57,317 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:30:57,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:30:57,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:30:57,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:30:57,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:30:57,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:30:57,327 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:30:57,374 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:30:57,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:30:57,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:30:57,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:30:57,379 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:30:57,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:30:57,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:30:57,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:30:57,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:30:57,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:30:57,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:30:57,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:30:57,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:30:57,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:30:57,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:30:57,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:30:57,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:30:57,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:30:57,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:30:57,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:30:57,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:30:57,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:30:57,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:30:57,384 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:30:57,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:30:57,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:30:57,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:30:57,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:30:57,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:30:57,385 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:30:57,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:30:57,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:30:57,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:30:57,793 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:30:57,794 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:30:57,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05.c [2020-10-28 13:30:57,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ad038338/ddc78962864b4ebda32b5d39311699ed/FLAG98aeecedd [2020-10-28 13:30:58,689 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:30:58,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label05.c [2020-10-28 13:30:58,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ad038338/ddc78962864b4ebda32b5d39311699ed/FLAG98aeecedd [2020-10-28 13:30:58,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ad038338/ddc78962864b4ebda32b5d39311699ed [2020-10-28 13:30:58,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:30:58,770 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:30:58,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:30:58,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:30:58,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:30:58,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:30:58" (1/1) ... [2020-10-28 13:30:58,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2802ec41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:30:58, skipping insertion in model container [2020-10-28 13:30:58,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:30:58" (1/1) ... [2020-10-28 13:30:58,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:30:58,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:30:59,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:30:59,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:31:00,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:31:00,522 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:31:00,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00 WrapperNode [2020-10-28 13:31:00,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:31:00,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:31:00,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:31:00,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:31:00,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (1/1) ... [2020-10-28 13:31:00,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (1/1) ... [2020-10-28 13:31:00,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (1/1) ... [2020-10-28 13:31:00,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (1/1) ... [2020-10-28 13:31:00,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (1/1) ... [2020-10-28 13:31:00,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (1/1) ... [2020-10-28 13:31:00,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (1/1) ... [2020-10-28 13:31:00,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:31:00,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:31:00,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:31:00,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:31:00,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:31:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:31:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:31:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:31:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:31:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:31:00,967 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:31:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:31:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:31:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:31:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:31:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:31:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:31:00,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:31:00,970 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:31:00,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:31:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:31:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:31:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:31:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:31:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:31:00,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:31:10,023 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:31:10,024 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:31:10,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:31:10 BoogieIcfgContainer [2020-10-28 13:31:10,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:31:10,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:31:10,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:31:10,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:31:10,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:30:58" (1/3) ... [2020-10-28 13:31:10,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447f5432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:31:10, skipping insertion in model container [2020-10-28 13:31:10,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:31:00" (2/3) ... [2020-10-28 13:31:10,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447f5432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:31:10, skipping insertion in model container [2020-10-28 13:31:10,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:31:10" (3/3) ... [2020-10-28 13:31:10,040 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label05.c [2020-10-28 13:31:10,054 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:31:10,060 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:31:10,075 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:31:10,127 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:31:10,127 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:31:10,127 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:31:10,127 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:31:10,128 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:31:10,128 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:31:10,128 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:31:10,128 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:31:10,171 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:31:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 13:31:10,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:10,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:10,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:10,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1139014578, now seen corresponding path program 1 times [2020-10-28 13:31:10,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:10,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2063766147] [2020-10-28 13:31:10,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:10,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:10,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:11,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:11,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 13:31:11,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-10-28 13:31:11,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:11,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:31:11,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:31:11,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:31:11,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:11,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:11,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:11,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:11,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:11,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:31:11,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:11,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:11,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:31:11,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:11,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:31:11,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2063766147] [2020-10-28 13:31:11,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:31:11,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:31:11,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448447556] [2020-10-28 13:31:11,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:31:11,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:11,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:31:11,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:31:11,412 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:31:25,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:25,098 INFO L93 Difference]: Finished difference Result 1697 states and 3097 transitions. [2020-10-28 13:31:25,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:31:25,101 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-28 13:31:25,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:25,125 INFO L225 Difference]: With dead ends: 1697 [2020-10-28 13:31:25,126 INFO L226 Difference]: Without dead ends: 1013 [2020-10-28 13:31:25,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:31:25,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-28 13:31:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1003. [2020-10-28 13:31:25,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1003 states. [2020-10-28 13:31:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1543 transitions. [2020-10-28 13:31:25,310 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1543 transitions. Word has length 68 [2020-10-28 13:31:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:25,311 INFO L481 AbstractCegarLoop]: Abstraction has 1003 states and 1543 transitions. [2020-10-28 13:31:25,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:31:25,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1543 transitions. [2020-10-28 13:31:25,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 13:31:25,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:25,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:25,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:31:25,329 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash 213001810, now seen corresponding path program 1 times [2020-10-28 13:31:25,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:25,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318991767] [2020-10-28 13:31:25,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:25,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:25,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:26,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:26,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:28,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:28,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 13:31:28,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:31:28,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3006 [2020-10-28 13:31:28,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:28,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:28,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:31:28,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:31:28,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:31:28,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:28,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:28,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:28,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:28,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:28,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:31:28,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:28,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:28,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:28,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:31:28,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:31:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:28,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:28,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:28,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:31:28,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:28,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:31:28,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:28,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:28,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:31:28,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:31:28,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318991767] [2020-10-28 13:31:28,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:31:28,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:31:28,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037055114] [2020-10-28 13:31:28,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:28,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:28,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:28,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:28,916 INFO L87 Difference]: Start difference. First operand 1003 states and 1543 transitions. Second operand 7 states. [2020-10-28 13:31:44,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:44,081 INFO L93 Difference]: Finished difference Result 2966 states and 4582 transitions. [2020-10-28 13:31:44,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:31:44,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2020-10-28 13:31:44,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:44,094 INFO L225 Difference]: With dead ends: 2966 [2020-10-28 13:31:44,094 INFO L226 Difference]: Without dead ends: 1969 [2020-10-28 13:31:44,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:44,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1969 states. [2020-10-28 13:31:44,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1969 to 1930. [2020-10-28 13:31:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-28 13:31:44,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2594 transitions. [2020-10-28 13:31:44,165 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2594 transitions. Word has length 139 [2020-10-28 13:31:44,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:44,166 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2594 transitions. [2020-10-28 13:31:44,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:44,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2594 transitions. [2020-10-28 13:31:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-28 13:31:44,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:44,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:44,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:31:44,169 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:44,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:44,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1942781409, now seen corresponding path program 1 times [2020-10-28 13:31:44,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:44,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979261019] [2020-10-28 13:31:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:44,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:48,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:48,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 13:31:48,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:48,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4097 [2020-10-28 13:31:48,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:48,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:31:48,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:31:48,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:48,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:48,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:48,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:48,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:31:48,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:48,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:48,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:48,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:48,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:48,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:31:48,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:48,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:31:48,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:48,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:48,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:48,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:31:48,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:31:48,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979261019] [2020-10-28 13:31:48,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:48,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:31:48,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016809401] [2020-10-28 13:31:48,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:31:48,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:48,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:31:48,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:31:48,667 INFO L87 Difference]: Start difference. First operand 1930 states and 2594 transitions. Second operand 5 states. [2020-10-28 13:32:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:03,353 INFO L93 Difference]: Finished difference Result 4765 states and 6600 transitions. [2020-10-28 13:32:03,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:32:03,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-10-28 13:32:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:03,372 INFO L225 Difference]: With dead ends: 4765 [2020-10-28 13:32:03,372 INFO L226 Difference]: Without dead ends: 2841 [2020-10-28 13:32:03,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:32:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2020-10-28 13:32:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 2832. [2020-10-28 13:32:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2832 states. [2020-10-28 13:32:03,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3706 transitions. [2020-10-28 13:32:03,480 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3706 transitions. Word has length 142 [2020-10-28 13:32:03,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:03,486 INFO L481 AbstractCegarLoop]: Abstraction has 2832 states and 3706 transitions. [2020-10-28 13:32:03,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:32:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3706 transitions. [2020-10-28 13:32:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-28 13:32:03,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:03,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:03,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:32:03,492 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:03,493 INFO L82 PathProgramCache]: Analyzing trace with hash 805720353, now seen corresponding path program 1 times [2020-10-28 13:32:03,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:03,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862291230] [2020-10-28 13:32:03,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:03,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:03,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:03,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:05,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 13:32:08,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:32:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:32:08,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 13:32:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:32:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:08,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:32:08,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:08,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:08,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:32:08,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:32:08,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:32:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:32:08,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 13:32:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:32:08,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:32:08,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:08,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:32:08,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:32:09,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862291230] [2020-10-28 13:32:09,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:09,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:09,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891745242] [2020-10-28 13:32:09,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:09,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:09,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:09,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:09,159 INFO L87 Difference]: Start difference. First operand 2832 states and 3706 transitions. Second operand 7 states. [2020-10-28 13:32:26,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:26,325 INFO L93 Difference]: Finished difference Result 8394 states and 11117 transitions. [2020-10-28 13:32:26,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:32:26,326 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-10-28 13:32:26,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:26,377 INFO L225 Difference]: With dead ends: 8394 [2020-10-28 13:32:26,377 INFO L226 Difference]: Without dead ends: 4678 [2020-10-28 13:32:26,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:32:26,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2020-10-28 13:32:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 3774. [2020-10-28 13:32:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3774 states. [2020-10-28 13:32:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 4516 transitions. [2020-10-28 13:32:26,501 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 4516 transitions. Word has length 215 [2020-10-28 13:32:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:26,502 INFO L481 AbstractCegarLoop]: Abstraction has 3774 states and 4516 transitions. [2020-10-28 13:32:26,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 4516 transitions. [2020-10-28 13:32:26,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-28 13:32:26,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:26,506 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:26,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:32:26,507 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:26,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:26,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1007372526, now seen corresponding path program 1 times [2020-10-28 13:32:26,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:26,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828938082] [2020-10-28 13:32:26,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:26,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:26,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:27,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:27,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-28 13:32:27,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:32:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1230 [2020-10-28 13:32:27,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:27,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:32:27,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:32:27,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:27,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:27,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:27,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:27,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:27,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:27,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:32:27,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:27,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:27,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:27,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:28,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:28,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:32:28,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:28,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:32:28,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:28,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:28,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:32:28,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:28,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:28,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:28,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:28,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:32:28,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:32:28,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:28,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:32:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 190 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:32:28,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828938082] [2020-10-28 13:32:28,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:28,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:28,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994896450] [2020-10-28 13:32:28,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:28,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:28,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:28,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:28,341 INFO L87 Difference]: Start difference. First operand 3774 states and 4516 transitions. Second operand 7 states. [2020-10-28 13:32:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:44,043 INFO L93 Difference]: Finished difference Result 9835 states and 12209 transitions. [2020-10-28 13:32:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:32:44,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-10-28 13:32:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:44,082 INFO L225 Difference]: With dead ends: 9835 [2020-10-28 13:32:44,082 INFO L226 Difference]: Without dead ends: 6067 [2020-10-28 13:32:44,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:32:44,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6067 states. [2020-10-28 13:32:44,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6067 to 6047. [2020-10-28 13:32:44,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6047 states. [2020-10-28 13:32:44,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6047 states to 6047 states and 7265 transitions. [2020-10-28 13:32:44,267 INFO L78 Accepts]: Start accepts. Automaton has 6047 states and 7265 transitions. Word has length 228 [2020-10-28 13:32:44,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:44,268 INFO L481 AbstractCegarLoop]: Abstraction has 6047 states and 7265 transitions. [2020-10-28 13:32:44,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:44,268 INFO L276 IsEmpty]: Start isEmpty. Operand 6047 states and 7265 transitions. [2020-10-28 13:32:44,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-28 13:32:44,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:44,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:44,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:32:44,273 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:44,274 INFO L82 PathProgramCache]: Analyzing trace with hash 538447754, now seen corresponding path program 1 times [2020-10-28 13:32:44,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:44,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51355442] [2020-10-28 13:32:44,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:44,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:44,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:44,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:48,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:48,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:32:48,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:32:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4100 [2020-10-28 13:32:48,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:48,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:32:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:32:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:48,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:48,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:48,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:48,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:48,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:32:48,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:48,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:48,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:48,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:48,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:48,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:48,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:48,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:48,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:48,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:32:48,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:48,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:32:48,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:48,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:48,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:48,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:48,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:48,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:48,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:48,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:48,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:32:48,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:48,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:32:48,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:48,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:48,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:32:48,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:32:48,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [51355442] [2020-10-28 13:32:48,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:48,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:32:48,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238986516] [2020-10-28 13:32:48,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:32:48,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:48,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:32:48,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:32:48,875 INFO L87 Difference]: Start difference. First operand 6047 states and 7265 transitions. Second operand 5 states. [2020-10-28 13:33:02,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:02,970 INFO L93 Difference]: Finished difference Result 15586 states and 19022 transitions. [2020-10-28 13:33:02,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:33:02,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-10-28 13:33:02,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:03,033 INFO L225 Difference]: With dead ends: 15586 [2020-10-28 13:33:03,033 INFO L226 Difference]: Without dead ends: 9544 [2020-10-28 13:33:03,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:33:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9544 states. [2020-10-28 13:33:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9544 to 7798. [2020-10-28 13:33:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7798 states. [2020-10-28 13:33:03,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7798 states to 7798 states and 9310 transitions. [2020-10-28 13:33:03,273 INFO L78 Accepts]: Start accepts. Automaton has 7798 states and 9310 transitions. Word has length 230 [2020-10-28 13:33:03,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:03,276 INFO L481 AbstractCegarLoop]: Abstraction has 7798 states and 9310 transitions. [2020-10-28 13:33:03,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:33:03,276 INFO L276 IsEmpty]: Start isEmpty. Operand 7798 states and 9310 transitions. [2020-10-28 13:33:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-28 13:33:03,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:03,282 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:03,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:33:03,282 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:03,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:03,283 INFO L82 PathProgramCache]: Analyzing trace with hash -337091392, now seen corresponding path program 1 times [2020-10-28 13:33:03,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:03,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431109257] [2020-10-28 13:33:03,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:03,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:03,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:08,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:08,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:33:08,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:33:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 13:33:08,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:08,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:33:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:33:08,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 13:33:08,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:08,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:08,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:08,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:33:08,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:08,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:08,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:08,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:08,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:08,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:08,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:08,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:33:08,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:08,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:33:08,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:08,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:08,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:33:08,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:33:08,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:33:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:08,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:09,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:09,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:33:09,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:33:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 13:33:09,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:09,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:33:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:33:09,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431109257] [2020-10-28 13:33:09,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:33:09,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:33:09,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707095956] [2020-10-28 13:33:09,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:33:09,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:09,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:33:09,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:33:09,201 INFO L87 Difference]: Start difference. First operand 7798 states and 9310 transitions. Second operand 5 states. [2020-10-28 13:33:25,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:25,126 INFO L93 Difference]: Finished difference Result 16031 states and 19422 transitions. [2020-10-28 13:33:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:33:25,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 241 [2020-10-28 13:33:25,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:25,163 INFO L225 Difference]: With dead ends: 16031 [2020-10-28 13:33:25,163 INFO L226 Difference]: Without dead ends: 8239 [2020-10-28 13:33:25,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:33:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8239 states. [2020-10-28 13:33:25,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8239 to 8231. [2020-10-28 13:33:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8231 states. [2020-10-28 13:33:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8231 states to 8231 states and 10063 transitions. [2020-10-28 13:33:25,372 INFO L78 Accepts]: Start accepts. Automaton has 8231 states and 10063 transitions. Word has length 241 [2020-10-28 13:33:25,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:25,373 INFO L481 AbstractCegarLoop]: Abstraction has 8231 states and 10063 transitions. [2020-10-28 13:33:25,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:33:25,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8231 states and 10063 transitions. [2020-10-28 13:33:25,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-10-28 13:33:25,381 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:25,382 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:25,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:33:25,382 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:25,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:25,383 INFO L82 PathProgramCache]: Analyzing trace with hash -59539068, now seen corresponding path program 1 times [2020-10-28 13:33:25,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:25,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489842267] [2020-10-28 13:33:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:25,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:25,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:25,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:26,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:28,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:28,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 328 [2020-10-28 13:33:28,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:33:28,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3357 [2020-10-28 13:33:28,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:28,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:28,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:33:28,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 13:33:28,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:28,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:28,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:28,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:28,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:28,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:33:28,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:28,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:28,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:28,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:29,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:29,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:29,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:29,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:33:29,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:29,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:33:29,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:29,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:29,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:29,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:33:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:29,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:29,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:29,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:33:29,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:29,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:33:29,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:29,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:29,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:33:29,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:29,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:33:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:29,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:29,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:29,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:33:29,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:29,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 13:33:29,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:29,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:29,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:33:29,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:33:29,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:33:29,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [489842267] [2020-10-28 13:33:29,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:33:29,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:33:29,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909490051] [2020-10-28 13:33:29,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:33:29,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:29,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:33:29,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:33:29,546 INFO L87 Difference]: Start difference. First operand 8231 states and 10063 transitions. Second operand 7 states. [2020-10-28 13:33:52,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:52,178 INFO L93 Difference]: Finished difference Result 20286 states and 25640 transitions. [2020-10-28 13:33:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:33:52,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 312 [2020-10-28 13:33:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:52,215 INFO L225 Difference]: With dead ends: 20286 [2020-10-28 13:33:52,216 INFO L226 Difference]: Without dead ends: 11590 [2020-10-28 13:33:52,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:33:52,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11590 states. [2020-10-28 13:33:52,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11590 to 10170. [2020-10-28 13:33:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10170 states. [2020-10-28 13:33:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10170 states to 10170 states and 12889 transitions. [2020-10-28 13:33:52,482 INFO L78 Accepts]: Start accepts. Automaton has 10170 states and 12889 transitions. Word has length 312 [2020-10-28 13:33:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:52,482 INFO L481 AbstractCegarLoop]: Abstraction has 10170 states and 12889 transitions. [2020-10-28 13:33:52,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:33:52,483 INFO L276 IsEmpty]: Start isEmpty. Operand 10170 states and 12889 transitions. [2020-10-28 13:33:52,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-28 13:33:52,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:52,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:52,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:33:52,493 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:52,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:52,494 INFO L82 PathProgramCache]: Analyzing trace with hash 2114757641, now seen corresponding path program 1 times [2020-10-28 13:33:52,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:52,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149485813] [2020-10-28 13:33:52,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:52,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:52,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:54,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:57,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:57,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-28 13:33:57,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:33:57,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 13:33:57,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:57,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:33:57,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:33:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:33:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:57,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:57,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:57,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:33:57,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:33:57,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:57,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:57,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:57,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:33:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:57,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:57,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:33:57,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:57,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:33:57,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:57,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:57,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:33:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:57,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:33:57,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:57,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:33:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:57,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:57,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:57,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:33:57,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:57,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:33:57,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:57,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:57,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:33:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:33:57,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:33:57,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:57,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:33:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:58,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:33:58,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:33:58,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:33:58,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:33:58,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:33:58,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:33:58,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:33:58,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:33:58,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:33:58,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:33:58,181 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 331 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:33:58,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149485813] [2020-10-28 13:33:58,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:33:58,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:33:58,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886382371] [2020-10-28 13:33:58,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:33:58,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:33:58,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:33:58,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:33:58,184 INFO L87 Difference]: Start difference. First operand 10170 states and 12889 transitions. Second operand 7 states. [2020-10-28 13:34:15,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:15,158 INFO L93 Difference]: Finished difference Result 24911 states and 32273 transitions. [2020-10-28 13:34:15,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:34:15,160 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-28 13:34:15,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:15,205 INFO L225 Difference]: With dead ends: 24911 [2020-10-28 13:34:15,205 INFO L226 Difference]: Without dead ends: 14307 [2020-10-28 13:34:15,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:34:15,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14307 states. [2020-10-28 13:34:15,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14307 to 13749. [2020-10-28 13:34:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13749 states. [2020-10-28 13:34:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13749 states to 13749 states and 17014 transitions. [2020-10-28 13:34:15,549 INFO L78 Accepts]: Start accepts. Automaton has 13749 states and 17014 transitions. Word has length 317 [2020-10-28 13:34:15,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:15,549 INFO L481 AbstractCegarLoop]: Abstraction has 13749 states and 17014 transitions. [2020-10-28 13:34:15,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:34:15,549 INFO L276 IsEmpty]: Start isEmpty. Operand 13749 states and 17014 transitions. [2020-10-28 13:34:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-10-28 13:34:15,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:15,558 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:34:15,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:34:15,558 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:15,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1639307304, now seen corresponding path program 1 times [2020-10-28 13:34:15,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:15,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [469750244] [2020-10-28 13:34:15,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:15,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:16,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:18,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:20,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:20,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 334 [2020-10-28 13:34:20,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:34:20,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4432 [2020-10-28 13:34:20,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:20,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:34:20,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:34:20,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-28 13:34:20,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:20,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:20,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:20,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:20,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:20,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:34:20,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:20,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:20,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:20,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:20,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:20,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:20,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:20,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:34:20,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:20,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:34:20,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:20,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:20,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:34:20,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:20,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:34:20,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:20,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:20,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:20,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:20,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:34:20,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:34:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:34:20,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:20,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:34:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:34:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:20,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:20,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:20,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 13:34:20,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:20,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:34:20,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:20,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:20,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:34:20,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 13:34:20,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 328 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 13:34:20,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [469750244] [2020-10-28 13:34:20,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:20,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:34:20,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280909092] [2020-10-28 13:34:20,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:34:20,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:20,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:34:20,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:34:20,628 INFO L87 Difference]: Start difference. First operand 13749 states and 17014 transitions. Second operand 7 states. [2020-10-28 13:34:35,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:34:35,660 INFO L93 Difference]: Finished difference Result 27964 states and 34624 transitions. [2020-10-28 13:34:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:34:35,668 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 318 [2020-10-28 13:34:35,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:34:35,710 INFO L225 Difference]: With dead ends: 27964 [2020-10-28 13:34:35,710 INFO L226 Difference]: Without dead ends: 14221 [2020-10-28 13:34:35,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:34:35,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14221 states. [2020-10-28 13:34:35,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14221 to 14194. [2020-10-28 13:34:35,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14194 states. [2020-10-28 13:34:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14194 states to 14194 states and 17500 transitions. [2020-10-28 13:34:36,022 INFO L78 Accepts]: Start accepts. Automaton has 14194 states and 17500 transitions. Word has length 318 [2020-10-28 13:34:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:34:36,023 INFO L481 AbstractCegarLoop]: Abstraction has 14194 states and 17500 transitions. [2020-10-28 13:34:36,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:34:36,023 INFO L276 IsEmpty]: Start isEmpty. Operand 14194 states and 17500 transitions. [2020-10-28 13:34:36,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-10-28 13:34:36,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:34:36,034 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:34:36,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:34:36,035 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:34:36,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:34:36,035 INFO L82 PathProgramCache]: Analyzing trace with hash -2115664795, now seen corresponding path program 1 times [2020-10-28 13:34:36,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:34:36,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321372529] [2020-10-28 13:34:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:34:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:36,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:36,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:36,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:39,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:41,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:41,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-28 13:34:41,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:34:41,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:34:41,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:41,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:34:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 208 [2020-10-28 13:34:41,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:34:41,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:41,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:34:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:41,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:34:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:34:41,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:41,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:41,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:34:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:41,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:41,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:41,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:34:41,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:34:41,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:41,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:34:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:41,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:34:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:34:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 13:34:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:34:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:34:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:41,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:34:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:34:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:34:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:41,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-28 13:34:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:34:41,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:34:41,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:34:41,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:34:41,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:34:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 13:34:41,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:34:41,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:34:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:34:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:34:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:34:41,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:34:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 258 proven. 61 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-28 13:34:41,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321372529] [2020-10-28 13:34:41,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:34:41,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:34:41,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103300775] [2020-10-28 13:34:41,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:34:41,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:34:41,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:34:41,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:34:41,814 INFO L87 Difference]: Start difference. First operand 14194 states and 17500 transitions. Second operand 6 states.